I just got mine up and running

I have a GRT Hx, Garmin 430w, GTX 327 setup.
Install was easy, just slow for me as my first dive into the systems and wiring on this airplane.
Power from the radio switch with 1 amp inline fuse / ground to ground.
One wire to pin 54 on the 430w. One wire to the GTX327 (ended up not needing to be done due to my config). One wire into the GRT Hx.
Configure the ports on the GRT and 430w via the menus and turn on traffic / etc in the GRT.
For the antenna, I had just removed the GDL-39 and re-used its antenna already under the airplane so very easy there.
Powered up just fine. Connect your phone to the Wifi and use the app to configure, and now I have traffic / weather in the GRT and the same in Forflight on my tablet and phone
Last step is upgrade 430w to 5.0x to get ADSB+ enabled (cards on the way) but ADSB in is working full time now.
I'd recommend it, much less than I was expecting to spend!